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Elena-2011 [213]
4 years ago
14

The partial electron configuration of an atom with 14 electrons is shown.

Chemistry
2 answers:
Scilla [17]4 years ago
7 0

Answer: X represents C) 3p2

telo118 [61]4 years ago
5 0

Given:

Atomic number of an atom = 14

Partial electron configuration = 1s²2s²2p⁶3s²X

To determine:

The identity of X

Explanation:

Based on the Aufbau rule, the order in which the orbitals fill up based on energetic considerations is:

1s 2s 2p 3s 3p 4s 3d 4p ....

maximum # electrons in s orbital = 2, p = 6,  d = 10 and so on

Since 3p would follow the 3s orbital, in this case we will have the full configuration as:

1s²2s²2p⁶3s²3p²

Ans c) X = 3p²



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Chemistry, need answer ASAP!! 50 points and i'll mark brainliest if correct! ^w^
pishuonlain [190]

Answer:

615 g

Explanation:

In order to convert from moles of any given substance into grams, we have to use said substance's <em>molar mass</em>, as follows:

  • # moles * Molar mass = grams of substance.

Thus, we now <u>calculate the molar mass of beryllium iodide</u>, BeI₂, using the <em>molar masses of the elements</em>:

  • Molar Mass of BeI₂ = Molar Mass of Be + (Molar Mass of I)*2 = 262.821 g/mol

Finally we <u>calculate how many grams are there in 2.34 moles of BeI₂</u>:

  • 2.34 mol * 262.821 g/mol = 615 g
4 0
3 years ago
Consider the following system at equilibrium where H° = -87.9 kJ, and Kc = 83.3, at 500 K. PCl3(g) + Cl2(g) PCl5(g) When 0.17 mo
BigorU [14]

Answer:

K remains the same;

Q < K;

The reaction must run in the forward direction to reestablish the equilibrium;

The concentration of PCl_3 will decrease.

Explanation:

In this problem, we're adding an excess of a reactant, chlorine gas, to a system that is already at equilibrium. According to the principle of Le Chatelier, when a system at equilibrium is disturbed, the equilibrium shifts toward the side of the equilibrium that minimizes the disturbance.

Since we'll have an excess of chlorine, the system will try to reduce that excess by shifting the equilibrium to the right. Therefore, the reaction must run in the forward direction to reestablish the equilibrium.

The value of K remains the same, as it's only temperature-dependent, while the value of Q will be lower than K, that is, Q < K, as Q < K is the case when reaction proceeds to the right.

As a result, since PCl_3 is also a reactant, its concentration will decrease.

8 0
3 years ago
Be sure to answer all parts. Consider the following balanced redox reaction (do not include state of matter in your answers): 2C
timurjin [86]

Answer:

The specie which is oxidized is:- CrO_2^-

The specie which is reduced is:- ClO^-

Explanation:

Oxidation reaction is defined as the chemical reaction in which an atom looses its electrons. The oxidation number of the atom gets increased during this reaction.

X\rightarrow X^{n+}+ne^-

Reduction reaction is defined as the chemical reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

X^{n+}+ne^-\rightarrow X

For the given chemical reaction:

2CrO_2^- + 6ClO^- + 2H_2O\rightarrow 2CrO_4^{2-} + 3Cl_2 + 4OH^-

The half cell reactions for the above reaction follows:

Oxidation half reaction:  CrO_2^- + 2H_2O + 4OH^-\rightarrow CrO_4^{2-} + 4H_2O + 3e^-

Reduction half reaction:  2ClO^- + 4H_2O + 2e^-\rightarrow Cl_2 + 2H_2O + 4OH^-

Thus, the specie which is oxidized is:- CrO_2^-

The specie which is reduced is:- ClO^-

8 0
4 years ago
A person’s genotype is pp. p=five fingers. What is this person’s phenotype?
Kay [80]

Answer:

25

Explanation:

5×5 =25

3 0
3 years ago
Who was on the grand committee
Rzqust [24]

Answer:

European Union was on grand committee

6 0
3 years ago
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